{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2021-47061",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47061",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-02-29T22:37:35.689Z",
    "updatedAt": "2026-08-05T08:45:47.418Z",
    "importedAt": "2026-10-24T01:56:36.661Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU\n\nIf allocating a new instance of an I/O bus fails when unregistering a\ndevice, wait to destroy the device until after all readers are guaranteed\nto see the new null bus.  Destroying devices before the bus is nullified\ncould lead to use-after-free since readers expect the devices on their\nreference of the bus to remain valid.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f65886606c2d3b562716de030706dfe1bea4ed5e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "03c6cccedd3913006744faa252a4da5145299343"
            },
            {
              "version": "f65886606c2d3b562716de030706dfe1bea4ed5e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4e899ca848636b37e9ac124bc1723862a7d7d927"
            },
            {
              "version": "f65886606c2d3b562716de030706dfe1bea4ed5e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "30f46c6993731efb2a690c9197c0fd9ed425da2d"
            },
            {
              "version": "f65886606c2d3b562716de030706dfe1bea4ed5e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2ee3757424be7c1cd1d0bbfa6db29a7edd82a250"
            },
            {
              "version": "f0dfffce3f4ffd5f822568a4a6fb34c010e939d1",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "840e124f89a5127e7eb97ebf377f4b8ca745c070",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "40a023f681befd9b2862a3c16fb306a38b359ae5",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "19184bd06f488af62924ff1747614a8cb284ad63",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "41b2ea7a6a11e2b1a7f2c29e1675a709a6b2b98d",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "68c125324b5e1d1d22805653735442923d896a1d",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "4.4.238",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.5"
            },
            {
              "version": "4.9.238",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.10"
            },
            {
              "version": "4.14.200",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.15"
            },
            {
              "version": "4.19.148",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.20"
            },
            {
              "version": "5.4.66",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.5"
            },
            {
              "version": "5.8.10",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.9"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.9",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.9"
            },
            {
              "version": "5.10.37",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.11.21",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.11.*"
            },
            {
              "version": "5.12.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.12.*"
            },
            {
              "version": "5.13",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}